The Filter,fluid, cataloged under National Stock Number 4330-01-691-6665, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Filter,fluid |
| FSC / FSG | 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters (FSG 43) |
| Manufacturers | Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics (CAGE 0DTZ7); Northrop Grumman Systems Corporation (CAGE 03956) |
| Parameter | Value |
|---|---|
| NSN | 4330-01-691-6665 |
| Primary Part Number | HH9650K16KSSS00001 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HH9650K16KSSS00001 PRIMARY | Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics (USA) |
| 18586520-2 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| HH9650K16CSSB3HY688 | 5/9 Secondary reference Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics |
| 1858652 REV E | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4330-01-691-6665 is a Filter,fluid, manufactured by Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-691-6665 has 2 manufacturer part numbers on file: HH9650K16KSSS00001 (Pall Corporation Fluid Dynamics Division Dba Pall Corporation Fluid Dynamics), 18586520-2 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-693-4526. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.